A luminous fligree glass heart on the coast inside of which is a rose snails & seashells under moonlight night

A filigree glass heart in art typically refers to a delicate, intricately crafted heart-shaped object made of glass with ornate patterns or designs. The term "filigree" is often used to describe delicate and decorative metalwork, but in this context, it signifies a similar level of intricate and ornamental craftsmanship applied to glass. Such pieces are often associated with themes of love, fragility, and craftsmanship in art.